code: def test_multichannel_input(self, num_channels):
      random.seed(1)
      sample_rate = 16000
      samples = get_sinc_impulse(sample_rate, 10)
      n_channels = np.tile(samples, (num_channels, 1))
      augment = RoomSimulator(leave_length_unchanged=True)
      # Setting the seed is important for reproduction
      np.random.seed(1)
      augmented_samples = augment(
          samples=samples, sample_rate=sample_rate
      )
  
      assert augmented_samples.shape == samples.shape
  
      augment.freeze_parameters()
      np.random.seed(1)
      augmented_n_channels = augment(
          samples=n_channels, sample_rate=sample_rate
      )
  
      assert augmented_n_channels.shape == n_channels.shape
  
      assert np.allclose(augmented_samples, augmented_n_channels[0])
  
file_path: audiomentations/tests/test_room_simulator.py
imports: import random
  import numpy
  import pytest
  from audiomentations import RoomSimulator
label_desc: Use image node_id 3 for calling the TestRoomSimulatorTransform obj's underlying member method code with example usage: obj.test_multichannel_input(num_channels) without return types